453results about How to "Promote exchange" patented technology

The invention discloses an agricultural solid waste contaminated soil remediation device, and relates to the field of soil remediation, the agricultural solid waste contaminated soil remediation device comprises a base plate, a storage box and a first liquid outlet pipe, the bottom of the base plate is fixedly connected with four electric wheels, the upper portion of the base plate is fixedly connected with a handheld handrail, the storage box is fixedly connected to the upper portion of the base plate, and the first liquid outlet pipe is fixedly connected to the base plate; the upper end of the first liquid outlet pipe penetrates through the base plate to communicate with the storage box, the bottom of the base plate is fixedly connected with a first extension plate, and the first extension plate is fixedly connected with a first motor. According to the device, soil on the filter plate is vibrated, so that the soil leaks out of filter holes in the filter plate, and building concrete stones larger than the filter holes cannot fall off; and the concrete stones embedded in the soil can be effectively removed, and the blocking of the stones can be reduced during the subsequent injection of the repairing liquid, so that the repairing liquid can be fully permeated into the soil.

The invention provides an instant-penetration expanded polytetrafluoroethylene artificial blood vessel and a preparation method thereof. The preparation method comprises the following steps: mixing PTFE dispersion resin and lubricating oil with a first compression ratio, and curing to obtain a first PTFE mixture; mixing the PTFE dispersion resin with a second compression ratio and lubricating oil, and curing to obtain a second PTFE mixture, wherein the first compression ratio is higher than the second compression ratio; the first PTFE mixture is pre-pressed into a middle layer cylinder; pre-pressing the second PTFE mixture into an inner-layer cylinder and an outer-layer cylinder; the middle-layer cylinder is put into the outer-layer cylinder, the inner-layer cylinder is put into the middle-layer cylinder to obtain a composite cylinder, and the composite cylinder is subjected to blank pressing treatment to obtain a secondary blank pressing cylinder; and carrying out one-way stretching on the secondary compaction cylinder to obtain the instant-penetration expanded polytetrafluoroethylene artificial blood vessel which is not layered after being punctured.

The invention provides a helmet standard wearing detection method based on improved YOLOv8, and belongs to the technical field of computer vision target detection. The technical problem that an existing detection algorithm cannot judge whether the safety helmet is worn normatively or not is solved. According to the technical scheme, the method comprises the following steps: S1, collecting sample data; s2, a variable convolution Deform ConvolutionV2 is adopted to replace a traditional convolution, and a variable convolution is adopted to replace the traditional convolution; s3, DCNV2 improvement based on MPCA is carried out; s4, an improved multi-scale feature fusion module; and S5, training the improved YOLOv8 network model by using the helmet standard wearing data set to obtain a trained model. The beneficial effects of the invention are that the method not only helps a manager to effectively supervise the wearing condition of the safety helmet on the working site, but also provides a new idea and example for the target detection technology based on deep learning in the field of safety helmet detection.

The invention relates to the technical field of enameled wire cooling, in particular to an enameled wire cooling device for enameled wire production. The water cooling device comprises a water cooling box, cooling liquid is contained in the water cooling box, at least two sets of conveying assemblies are arranged in the water cooling box, each conveying assembly comprises a rotating motor arranged on the side wall of the water cooling box, the output end of each rotating motor penetrates through the water cooling box, a transmission roller is arranged at the end of each rotating motor, a limiting roller is arranged above each transmission roller, and an adjusting assembly is arranged above each limiting roller; varnished wires pass through the through holes formed in the sponge mat and are adsorbed by the sponge mat through water on the surface of the through holes, so that the varnished wires are automatically dried, when much water is adsorbed in the sponge mat, the telescopic rods are shrunk by pressing the pressing plates, and the compression springs are compressed in the shrunk process of the telescopic rods; and water adsorbed in the sponge pad overflows under the extrusion force of the pressing plate, so that the cooled enameled wire is quickly dried and dehumidified.

The surface cleaning equipment comprises a surface cleaning device and a base, the surface cleaning device comprises a dirt suction system and a ground brush with a dirt suction opening, the dirt suction system comprises a dirt containing barrel and a dirt suction fan, a cleaning assembly is arranged on the ground brush, the surface cleaning device is placed on the base, and the dirt suction fan is arranged on the base. A ventilation gap is formed between the base and the outer surface of the cleaning assembly, the ventilation gap extends in the direction of the dirt suction opening and is communicated with the dirt suction opening to form an air suction path, the area of the cleaning assembly located in the air suction path is Sj, the surface area of the cleaning assembly is S, and Sj is larger than or equal to 0.5 S. Due to the fact that the area of the cleaning assembly located in the air suction path is large, the area of the cleaning assembly located in the air suction path is larger than or equal to Sj. Under the action of the dirt suction motor, the airflow flows through the air suction path to take away moisture on the hair clusters of the cleaning assembly on the air suction path, so that water vapor on the surface of the cleaning assembly is separated, the drying efficiency is improved, the drying effect is improved, meanwhile, more energy is saved, and the service life of the cleaning assembly is prolonged.

The invention relates to the technical field of skull repair, and discloses a personalized 3D printing porous composite hydroxyapatite coating skull repair body which comprises a truss structure, a plurality of porous areas are distributed on the truss structure, bionic bone trabecula structures are integrally formed in the porous areas, the truss structure is composed of hollow pipes communicating with one another, and the hollow pipes communicate with one another. A plurality of small holes and micro holes which are communicated with the interior of the hollow pipe are formed in the hollow pipe, and a composite coating of a hydroxyapatite coating and titanium is sprayed on the porous area; the invention provides a personalized 3D printed skull restoration with a porous composite hydroxyapatite coating. The problem that the biocompatibility, the bone induction capability and the bone ingrowth effect of an existing skull restoration need to be improved is solved.

The invention discloses a water area pollutant emergency treatment system and equipment in the technical field of water pollution treatment, and the system comprises a plurality of water quality monitoring modules which are used for collecting water quality factors of a covered area and generating real-time water quality data; the data collection module is used for acquiring, storing and forwarding real-time water quality data; the prediction module is used for analyzing and predicting the pollutant component evolution condition based on the real-time water quality data by using a big data model, and generating a pollutant component evolution condition graph of the water area; the emergency preprocessing scheme generation module is used for generating a corresponding preprocessing scheme and a preprocessing position based on the pollutant diffusion range diagram and the pollutant component evolution situation diagram; the biological filtration assemblies are used for being deployed at the pretreatment position and filtering and cleaning the water area. Plants aiming at specific pollutants are planted on the biological filtration assembly, and long-term ecological restoration can be achieved while water area pollutants are emergently treated.

The invention discloses a micro-channel jet reactor. The micro-channel jet reactor comprises a sample introduction unit, a main mixing unit and a reaction unit which are sequentially communicated, the main mixing unit comprises a first inner pipe and a first outer pipe arranged outside the first inner pipe in a sleeving manner; a first annular space is formed between the first inner pipe and the first outer pipe; the sample introduction unit is communicated with the first inner pipe; a second sample inlet is formed in the first annular space, and a plurality of through holes are formed in the first inner pipe; the reaction unit comprises a second inner pipe and a second outer pipe arranged outside the second inner pipe in a sleeving manner; a second annular space is formed between the second inner pipe and the second outer pipe; the first inner pipe is communicated with the second inner pipe; during use, condensate is arranged in the second annular space. The reactor can effectively improve the mixing uniformity degree of reaction liquid, meanwhile, the reaction temperature is controlled, and the reaction rate and selectivity are ensured.

The invention discloses functional injection type bionic hydrogel for promoting bone healing and a preparation method thereof, and relates to the technical field of medical instruments. The hydrogel has good functional characteristics, is a biomimetic material prepared on the basis of methacrylated gelatin, and aims to regulate and control the degradation rate, the drug release mechanism and diversified synergistic treatment and promote bone repair and regeneration; according to the hydrogel, matching of the degradation rate and the bone regeneration rate is achieved through reasonable matching, stem cell osteogenic differentiation and angiogenesis are promoted, ultrasonic controlled-release drug release and synergistic controlled-release of active factors are achieved, inflammation is reduced, and the bone repair process is promoted; the calcium phosphate bone cement provides biocompatibility and bone conductivity, and the nano clay releases active ions to improve the microenvironment and promote bone repair; in addition, the magnetic nanoparticles and a static magnetic field have synergistic interaction, the bone healing process is further accelerated, and treatment effect monitoring is enhanced through magnetic resonance imaging.

The invention provides a dual-density micro-channel manifold heat exchanger which comprises a manifold layer located on the upper portion and a heat exchange micro-channel layer located on the lower portion, the manifold layer comprises a fluid inlet manifold located on the upper face and a fluid inlet manifold located on the lower face, and the fluid inlet manifold communicates with the fluid inlet manifold; the heat exchange micro-channel layer comprises high-density micro-channels and low-density micro-channels which are located on the upper portion face, the low-density micro-channels are located on the two sides of the high-density micro-channels, and the lower portion face of the heat exchange micro-channel layer is in thermal connection with a heat source; the manifold layer covers the upper part of the high-density micro-channel layer, and the manifold layer wraps the high-density micro-channel area, so that fluid distribution can be optimized; the manifold layer is provided with a fluid outlet, and the fluid outlet is connected with the low-density microchannels. The micro-channel heat sink wall surface temperature difference is effectively reduced, the non-uniform heat dissipation requirement of heat dissipation equipment is met, and the internal temperature distribution of the equipment is improved.

The invention provides a preparation method of a mineralized collagen scaffold material with a bionic structure, and belongs to the field of biomedical engineering.The preparation method comprises the steps that an amorphous calcium phosphate solution stabilized by polyacrylic acid is prepared, and the molar ratio of Ca to P in the amorphous calcium phosphate solution is 1.67: 1; preparing a collagen solution containing noradrenaline; carrying out isoelectric focusing treatment on the collagen solution under a constant voltage to form a dense membrane, and stretching the dense membrane to generate 120-200% deformation, so as to obtain a collagen membrane with a bionic structure; and soaking the collagen membrane in the amorphous calcium phosphate solution, and then performing freeze drying to obtain the noradrenaline-mineralized collagen scaffold material. The mineralized collagen scaffold material prepared by the method has excellent biocompatibility, osteogenesis inductivity and sufficient mechanical strength, can effectively promote bone tissue defect repair, and has a good application prospect in the field of bone tissue engineering. The invention further provides the mineralized collagen scaffold material with the bionic structure and application of the mineralized collagen scaffold material.

The invention provides a preparation method of an HNT modified polymer composite membrane. The preparation method comprises the following steps: S1, preparing dealuminated HNT; s2, preparing modified HNT by using the dealuminated HNT; s3, preparing sulfonated polyether ether ketone; s4, performing ionization treatment on the sulfonated polyether ether ketone; and S5, preparing the HNT modified polymer composite membrane by using the modified HNT and the sulfonated polyetheretherketone or perfluorosulfonic acid membrane obtained in the step S4. The problems that an existing flow battery diaphragm is poor in comprehensive performance, high in cost and not suitable for various systems are solved.

The invention provides a special fertilizer for highland barley in Tibet high-altitude areas, which specifically comprises a matrix, a base fertilizer, an organic fertilizer, a trace element fertilizer, a modifier and a nutritional agent in a mass ratio of 100: 50: 100: 1: 15: 3, the substrate comprises loam, river sand and bentonite; the base fertilizer comprises nitrogenous fertilizer, phosphatic fertilizer and potash fertilizer; the organic fertilizer comprises bran, decomposed straw, decomposed excrement, plant ash and aquatic animal powder; the modifier comprises wormcast, silkworm excrement, perlite and vermiculite; the nutritional agent comprises compound vitamins, glucose, honey and compound amino acids; the raw materials used in the method are green, safe and pollution-free, the soil structure is improved while nutrient substances needed by highland barley growth are provided, the bran, the straw, the decomposed excrement and other agricultural wastes are used, cost is saved, efficiency is improved, and the utilization rate of resources is increased.

The invention relates to a lithium cobalt oxide positive electrode material with an O2 phase structure and a preparation method and application thereof, the chemical general formula of the lithium cobalt oxide positive electrode material is Li1 + a (CocMd) (1 + a) / (1 + a + b) O2. Xb (CocM'd) b / (1 + a + b) O2,-1 < a < = 0.1, 0 < b < = 1, 0 < c < = 1, 0 < = d < = 0.5,-1 < a + b < = 1.1, X comprises at least one of Na, K, Rb, Cs or B, and M and M'are selected from at least one of Ni, Mn, A l, Mg, Co, Cu, Ca, Zn, Zr, B, Nb, Fe, Cr, Y, La, Ce, Cd or Al; the space group is P63mc; according to an XRD (X-Ray Diffraction) test, diffraction characteristic peaks exist at the same time at the diffraction angles of 18.3 to 18.9 degrees, 37.9 to 38.4 degrees, 46.7 to 47.3 degrees and 16.0 to 16.5 degrees.

The invention discloses an iridium-based nanoparticle catalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing and grinding metal Ir salt, metal M salt and an alkali compound to obtain precursor powder; mixing the precursor powder with a solvent, and grinding to obtain a slurry mixture; drying the slurry mixture in a drying box to obtain a dried mixture; dispersing the dry mixture into powder, and transferring the powder to a high-temperature furnace for annealing treatment to obtain the iridium-based nanoparticle catalyst. The preparation method of the iridium-based nanoparticle catalyst is simple, only needs mechanical grinding, drying and high-temperature annealing procedures, is convenient and easy to implement, does not involve high-cost raw materials, and does not need a wastewater treatment procedure; the content of iridium in the nano-particle product can be controlled by adjusting the proportion of the metal salt, so that the loading capacity of precious metal iridium is effectively reduced; the average particle size of the obtained catalyst is 5-15 nm, the specific surface area is as high as 50-80 m < 2 > g <-1 >, and the catalyst has excellent catalytic activity.

The invention relates to the technical field of axial motor heat dissipation, in particular to an axial motor air cooling system which comprises a front plate and a rear plate, a rotor assembly and a stator assembly are installed between the front plate and the rear plate, and a ventilation shaft is fixedly installed in the middle of the interior of the rotor assembly in a penetrating mode. And the rear end of the ventilation shaft rotationally penetrates through the heat dissipation back plate and then is fixedly connected with a rotating shaft piece, a heat dissipation frame is fixedly installed in the middle of the heat dissipation front plate, a pressure fan is rotationally installed in the heat dissipation frame, and a speed increasing mechanism is arranged between the pressure fan and the ventilation shaft. According to the motor, on one hand, the fan can be further driven to rotate at a high speed by driving the double-shaft speed increaser while the motor operates, so that an additional high-speed fan does not need to be installed for heat dissipation, and on the other hand, airflow entering the motor can penetrate through the multiple gaps and the air channels between the rotor assembly and the stator assembly; therefore, the internal parts of the motor can be fully cooled.

According to the meta-aramid continuous polymerization process and the innovative structure of the first reactor and the second reactor, the technological process of a newly-designed meta-aramid continuous polymerization device is introduced, a fixed tube plate type heat exchanger and the first reactor are combined into an efficient axial flow type polymerization reactor, and a static mixer is directly inserted into the lower part of a stirrer; reactants are quickly scattered and uniformly distributed when entering the reactor, the temperature of the reactor is effectively controlled, reaction heat is removed, and the flowing state in the reaction kettle is changed. A guide cylinder is additionally arranged at the lower part of a tube bundle, and an asymmetric and helical-surface paddle push-type stirrer is selected to push materials to circularly flow upwards in an inner tube nest and downwards in an outer tube nest, so that vertical circulation is formed. The second reaction kettle adopts a stirrer without a through shaft in the center, inner and outer double helical ribbons and a scraper, so that a flowing dead zone is eliminated, and the mixing of high-viscosity materials is solved. The added three-way ball valve and return line are used for cooling during starting and cleaning of the two reactors during stopping.

The utility model discloses a cresol refining device which comprises a crude cresol tank, an outsourcing crude cresol tank, a light component removal tower, a tail gas return pipe, a rectifying tower and a product tank, the outsourcing crude cresol tank and the crude cresol tank are both fixed on the ground, one side of the outsourcing crude cresol tank and one side of the crude cresol tank are provided with a conveying pump, outsourcing crude cresol and crude phenol are conveyed into the light component removal tower through the conveying pump, and the tail gas return pipe is connected with the rectifying tower. The light component removal tower is fixed on the ground, a condenser is arranged above the light component removal tower, the condenser refluxes condensed materials, a tail gas return pipe is arranged above the light component removal tower, the tail gas return pipe extends downwards to enter the lower part of the light component removal tower, the light component removal tower is connected with the rectifying tower through a conveying pipe, the rectifying tower is fixed on the ground, and a condenser is arranged above the rectifying tower. A discharging pipe of the rectifying tower is connected with the product tank, the product tank is fixed on the ground, and the crude phenol tank and the outsourcing crude cresol tank are the same in structure. The device is reasonable in design; and the tail gas return pipe can convey a part of hot gas into the light component removal tower so as to improve heat recovery.

The invention discloses a multifunctional bionic coating with osteogenesis induction and antibiosis functions and a preparation method thereof.The multifunctional bionic coating takes a biomedical material as a substrate and sequentially comprises a bone-imitating porous titanium dioxide nanotube layer, a phase-transition lysozyme nano-protein layer chelated with active metal ions and a bone-targeting biomolecule layer from inside to outside; the preparation method comprises the following steps: preparing a hollow bone-imitating porous titanium dioxide nanotube as a storage chamber on the surface of a biomedical material by adopting an anodic oxidation method, then preparing a phase-transition lysozyme protein layer chelated with active metal ions through in-situ self-assembly, and finally chemically connecting limb bone targeting biomolecules on the surface of the protein layer. And forming a bone targeting biomolecular layer. The multifunctional bionic coating can effectively control release of active metal ions, improve osteoblast activity and induce osteoblast adhesion and hydroxyapatite formation, and also has excellent antibacterial performance; and the preparation method is simple and easy to implement, and has a wide application prospect in the field of bone repair materials.

The invention relates to the field of bioengineering, in particular to a three-dimensional porous scaffold and sustained-release gel system for alveolar regeneration, which is composed of a three-dimensional porous hydrogel scaffold and temperature-sensitive hydrogel loaded with FGF-7. The three-dimensional porous hydrogel scaffold is prepared from hydroxyethyl methylacrylate-sodium alginate-gelatin frozen gel, and the temperature-sensitive hydrogel loaded with the FGF-7 is chitosan / beta-glycerophosphoric acid / gelatin temperature-sensitive hydrogel loaded with the FGF-7. The invention constructs an effective pulmonary alveolar regeneration promoting system, which not only can promote the repair of damaged pulmonary alveoli and improve the life quality of patients, but also provides new strategies and hopes for the treatment of lung diseases, and has wide clinical transformation prospects.

The invention is applied to the technical field of food processing, and discloses a preparation method of low-temperature extraction medicinal and edible freeze-dried powder based on natural plants, and the preparation method comprises the following steps: S1, raw material pretreatment, S2, ultralow-temperature pre-cooling, S3, high-voltage pulsed electric field treatment, S4, low-temperature extraction, S5, multi-stage filtration, S6, vacuum concentration, and S7, freeze drying. According to the preparation method of the natural plant-based low-temperature extracted medicinal and edible homologous freeze-dried powder, an ultralow-temperature pre-cooling technology is adopted, an extremely low-temperature environment is created for the natural plants, possible damage to active components in the natural plants caused by high temperature is prevented from the source, a high-voltage pulsed electric field treatment means is introduced, the permeability of cell membranes can be ingeniously and remarkably improved, and the content of the active components in the natural plants is increased. And when the barrier action of the cell membrane is weakened, the extraction process becomes more efficient, so that more active ingredients can be smoothly dissolved out, damage to the active ingredients in the processing process is avoided to the greatest extent, and complete retention of the active ingredients is ensured.

The utility model discloses a large-scale steel structure assembly type multifunctional artificial fish reef with high environment adaptability to deepwater, which relates to the technical field of marine ranch construction, and comprises a plurality of groups of support column components, each support column component comprises a first upright post, a second upright post and a third upright post which are sequentially lowered from inside to outside, the first stand column, the second stand column and the third stand column are detachably connected through a plurality of first cross beams, the multiple sets of supporting column assemblies are arranged at equal intervals in the circumferential direction and connected through a plurality of second cross beams, and ecological flow guide plates are detachably assembled on the inner second cross beam and the outer second cross beam correspondingly. The bottoms of the first stand column, the second stand column and the third stand column are each provided with a stable anchor disc. The problems of subsidence and deposition of the reef body on the soft soil foundation are solved, and the adaptive capacity of the reef body to the environment is improved; the function of various flow field conditions is realized through the flexibly adjustable ecological flow guide plate, and the required flow field effect can be formed by adjusting the distribution and angle of the ecological flow guide plate according to the flow field requirement.

The invention relates to a robot which comprises a trunk structure, a controller, a charging structure, a driving assembly and a walking structure, and the trunk structure is provided with a mounting cavity; the controller is mounted in the mounting cavity; the charging structure is connected with the trunk structure, is electrically connected with the controller and is used for supplying power to the controller; the robot comprises a trunk structure, a controller, a driving assembly and a walking structure, the driving assembly is electrically connected with the controller, the driving assembly is installed on the trunk structure, the walking structure is connected with the output end of the driving assembly, and the driving assembly is controlled by the controller to drive the walking structure to move. The robot can walk, retreat, roll and lie down, so that the robot can be applied to various fields of families, industry, rescue, detection and the like, and the application universality of the robot is achieved.

The invention relates to the field of high polymer materials, and discloses a visible light repairing type waterborne polyurethane emulsion and a preparation method thereof.The preparation method comprises the following steps that polytetrahydrofuran, isophorone diisocyanate, 2, 2-dimethylolpropionic acid and butyltin dilaurate are taken and placed in a reactor, pre-polymerization chain extension is conducted at the temperature of 60-90 DEG C, and a polyurethane prepolymer is obtained; the preparation method comprises the following steps: firstly, adding ASB-PEG2000-ASB, carrying out chain extension at 40-60 DEG C, then adding butanediol and carbohydrazide, continuously carrying out chain extension, then adding glucose, carrying out crosslinking at 40-60 DEG C, finally cooling to 25-50 DEG C, adding triethylamine, carrying out stirring to form a salt, adding deionized water, carrying out stirring dispersion, and carrying out emulsification so as to prepare the visible light repairing type waterborne polyurethane emulsion. The water-based polyurethane emulsion has the advantages that the water-based polyurethane emulsion has wide absorption in the visible light wave band, the self-repairing efficiency is high, the water-based polyurethane emulsion and polytetrahydrofuran are simultaneously used as soft segments to be introduced into water-based polyurethane, and the prepared water-based polyurethane emulsion has high mechanical performance and a visible light induced self-repairing function.

The invention provides a negative electrode material and a preparation method and application thereof. The negative electrode material includes: a core including a negative electrode active material; a carbon coating layer coating the core, the carbon coating layer including a first amorphous carbon layer and a polymer salt embedded in the first amorphous carbon layer; and the conductive material is positioned on the surface and / or inside the carbon coating layer. The negative electrode material realizes balanced improvement of fast charge performance, cycle performance and high temperature resistance, and can significantly improve the electrochemical performance of secondary batteries including lithium ion batteries and sodium ion batteries. The invention also provides a preparation method and application of the negative electrode material.

The invention discloses a method for designing a bionic bone scaffold based on wall thickness mixed gradient change, and belongs to the technical field of bionic bone scaffolds. By designing the wall thickness mixed gradient function, the lattice unit can have wall thickness gradient change in the radial direction and the axial direction at the same time, so that the porosity also has gradient change in three directions at the same time, and the defect that a bone scaffold is designed by using a lattice material (beam unit) unit and a TPMS unit in the prior art can be well overcome; and the stent better conforms to the natural bone structure and mechanical property requirements. The designed bionic bone scaffold is excellent in mechanical property, high in compression resistance and deformation resistance and capable of promoting cell growth and tissue regeneration.

The invention discloses an air energy heat pump all-in-one machine and a using method thereof, and relates to the technical field of heat pumps. Comprising a machine body, an evaporator, an adjusting module and an airflow driving module, the adjusting module is installed on the outer side of the evaporator, and the airflow driving module is installed on the adjusting module; the method further comprises the following steps that S1, in the daily operation mode, air flow is enhanced; s2, switching to a dust removal mode in a specific period of time every day, and removing dust on the surface of the evaporator; s3, dust removal is conducted on the ventilation plate; s4, switching to a defrosting mode; and S5, the angle is automatically adjusted, and the evaporator is defrosted from bottom to top. In a daily operation mode, the air conditioner is cooperatively matched with the fan to enhance air flow and improve heat exchange efficiency, in a dust removal mode, the air duct can remove dust on the evaporator and the ventilation plate at regular time, in a defrosting mode, the air duct moves from bottom to top to defrost, the upper half part of the air duct preheats and melts a frost layer, and the defrosting effect is improved. And the lower half part evaporates and dries the defrosted water drops.

The invention discloses a copper wire gold plating treatment process, which belongs to the technical field of integrated circuits. The process comprises the following steps: performing surface cleaning treatment on a palladium-plated copper wire and then immersing the wire in a gold plating solution for gold plating treatment to obtain a gold-plated palladium copper wire; drawing and thinning the gold-plated palladium copper wire to a preset diameter, and then sequentially performing annealing treatment and surface cleaning treatment to obtain the gold-plated palladium copper wire; the gold plating solution comprises a leveler, the leveler takes a polyhydroxy spirobiindene rigid structure as a skeleton, and uses a Mannich reaction to graft 3-hydroxypiperidine with aminomethyl at the α active hydrogen position of the skeleton, and then introduces bromine atoms into the skeleton through a bromination reaction and derives them into a boric acid pinacol ester group, and finally introduces a dithiophene benzothiadiazole structure into the skeleton through a Suzuki coupling reaction to obtain the gold-plated palladium copper wire; the invention adds the leveler into the gold plating solution to improve the bonding strength and flatness of the coating so as to meet the copper wire bonding packaging requirements.

The invention discloses a valve body assembly applied to an air conditioner refrigeration cycle system, and relates to the technical field of air conditioners, the valve body assembly comprises a four-way valve main body, a pilot valve seat is arranged on the four-way valve main body, a pilot valve is arranged on the pilot valve seat, and a first outlet pipe, a second outlet pipe and a third outlet pipe are further arranged on the surface of the four-way valve main body. The lower surface of the first outlet pipe, the lower surface of the second outlet pipe and the lower surface of the third outlet pipe fixedly communicate with cleaning pipes, and the first outlet pipe is provided with an adjusting component used for controlling the flow speed of refrigerant gas in a flow channel of the first outlet pipe, the flow channel of the second outlet pipe and the flow channel of the third outlet pipe. According to the air conditioner, the communicating pipe on the four-way valve can be cleaned regularly, the problem that a flow channel in a pipeline becomes narrow and even is blocked due to dust accumulation is avoided, flowing of refrigerant gas in the pipeline is facilitated, operation of a refrigeration cycle system is guaranteed after the air conditioner is started, and the service life of the air conditioner is prolonged.

The invention discloses zero-valent iron shell reinforced microbial immobilized particles as well as preparation and application thereof, and belongs to the technical field of wastewater treatment. According to the preparation method, anaerobic digestion bacteria and a zero-valent iron reinforced material are embedded in porous organic gel formed by cross-linking polymerization of polyvinyl alcohol or sodium alginate in a layered manner, so that stress of an external poor water quality environment and the zero-valent iron material on microorganisms is reduced; in the prepared zero-valent iron shell reinforced microbial immobilized particle, the shell containing the zero-valent iron can protect microorganisms from being disturbed by external adverse environmental conditions, the environmental adaptability of the microorganisms is improved, and meanwhile the biological activity of the microorganisms in the porous inner core is reinforced; on the other hand, the biological toxicity of the zero-valent iron material to microorganisms is reduced, and the broad-spectrum applicability of the zero-valent iron is improved.